The 46-year-old Nestor, ranked 135th in doubles, is playing in his final Davis Cup. Pospisil has been focusing on his singles career so his doubles ranking has slumped to 1,253, but he peaked at No. 4 in 2015.
The singles matchups will flip on Sunday, with Raonic playing Haase and Shapovalov taking on de Bakker.
Montreal’s Felix Auger-Aliassime, 18, is Canada’s reserve. He’s ranked No. 136 on the ATP Tour but has had moments of brilliance this season, including earning his way through qualifiers into the U.S. Open’s main draw.
“It’s exciting. We’ve got two young guys here since I last played that have been playing incredibly well over the past 18 months or so,” said Raonic, gesturing to Shapovalov and Auger-Aliassime at a news conference at Exhibition Place, where the event will be held at Coca-Cola Coliseum — home of the AHL’s Toronto Marlies. “We’re all excited for this. We’re excited it’s here in downtown Toronto, as well.”
Haase is top Dutch player in the tie, ranked 44th in the world. De Bakker is No. 236, while Rojer and Middelkopp are 20th and 33rd on the ATP Tour’s doubles rankings, respectively.
“It’s been said that Canada’s team has never been so strong, ever, so it’s going to be a tough test,” Dutch captain Paul Haarhuis said. “We’re looking at it one match at a time and every match we can win. It’s going to be difficult, but I believe we can do it.”
The winner of the tie will earn a spot in the qualification round to be played in February of 2019 that will decide the countries that will compete in the final at the end of the season as part of the new Davis Cup format set to begin next year.